M E L A N I A . 



Plate VI. 



Species 27. (Mus. Cuming.) 



Melania cochlidium. Mel. testa acute subwlata, ad 

 basin angulato-clavatd, solidiusculd, mrente-olivaced 

 vel rufescente, anfractibus undecim ad ditodi-cim, pri- 

 mis paiicis oblique minute eostatis, ceteris planis, Ixvi- 

 bus, oblique striatis, anfractu ultimo carina obtusd 

 prominente superne funiculato ; aperturd parmusculd, 

 margine columellari calloso-incurvo. 



The winding-stair Melania. Shell sharply subulate, 

 angularly club-shaped at the base, rather solid, green- 

 ish-olive or reddish, whorls eleven to twelve, the 

 first few obliquely minutely ribbed, the rest flat, 

 smooth, obliquely striated, last whorl corded round 

 the upper part with a prominent minute keel ; aper- 

 ture rather small, columellar margin callously in- 

 curved. 



Lea, Pro. Zool. Soc. 1850, p. 183. 



Hah. Islands of Siquijor and Guimaras, Philippines (in 

 very small streams) ; Cuming. 



This is, I fear, a variety, if not a monstrosity, of M. so- 

 bria of the same author, with the last whorl bulging round 

 the upper part into a prominent shelf. Both are from the 

 same locality. 



Species 28. (Fig. 28 a, b, and 29 a, b, Mus. Cuming.) 



Melania costata. Mel. testa aciculari, angustd, oli- 

 vaceo vel nigricante, anfractibus tredecim ad quatuor- 

 di'cini. superne contractus, delude plicato-costatis, striis 

 incisis spiraliter sulcatis ; aperturd parviusculd, mar- 

 gine columellari incurvd. 



The ribbed Melania. Shell acicular, narrow, olive 

 or blackish, whorls thirteen to fourteen, contracted 

 round the upper part, then plieately ribbed, grooved 

 throughout with spiral engraved strife ; aperture ra- 

 ther small, columellar margin callously incurved. 



Q.UOY and Gaimard, Zool. Voy. de 1' Astrolabe, vol. iii. 

 p. 155. pi. 56. f. 34-37. 

 Melania hastula, Lea. 



Hob. Philippine Islands ; Cuming. 



This species is of the same Protean character as M. as- 

 perata. In its typical state, as represented by M. Quoy, 

 and in the accompanying Plate, at Fig. 28 a, it is of very 

 slender acicular form, encircled throughout with strongly 

 grooved striaj, crossing over prominent longitudinally pli- 

 cated ribs. The ribs and grooves in some specimens, as 

 at Fig. 29 a, are much less apparent, and in others, as at 



Fig. 29 b, they are not developed at all ; and the shell re- 

 lieved of this crumpled sculpture is always larger and 

 thinner, just as in the Cones the shell is smaller when gra- 

 nulated, and larger when the calcifying functions of the 

 animal are not absorbed in the work of elaboration. 



Species 30. (Mus. Cuming.) 



Melania obstricta. Mel. testd acute subulatd, te- 

 nuiculd, ad basin constrictd et truncatd, luteo-oliva- 

 ced, corned, castaneo irregulariter longitudinaliter 

 puuctato-flammatd, anfractibus decern ad duodecim, 

 superne peculiariter constriclis, Icevibus, ad suluras 

 subplicatis ; aperturd brevinsculd, labro effuso. 



The tied Melania. Shell elongately subulate, rather 

 thin, constricted and truncated at the base, yellowish- 

 olive, horny, irregularly longitudinally dot-flamed 

 with chestnut, whorls ten to twelve, peculiarly con- 

 stricted round the upper part, smooth, a little puck- 

 ered at the suture ; aperture rather short, lip effused. 



Hob. ? 



A very distinct, smooth species, of which Mr. Cuming 

 has specimens with and without flamed painting, of a cha- 

 racteristic sombre olive-colour, peculiarly constricted both 

 on the upper and lower parts of the whorls. 



Species 31. (Mus. Cuming.) 



Melania canaliculata. Mel. testd turriculatd, in- 

 tense castaned, anfractibus subangustis, rotundatis, 

 lavibus vel obscure spiraliter striatis, superne con- 

 spicue late concavo-canaliculatis ; aperturd parvd, 

 ovatd, ad basin subproductd. 



The channelled Melania. Shell turriculated, dark- 

 chestnut, whorls rather narrow, rounded, smooth, 

 or obscurely spirally striated, conspicuously broadly 

 concavely channelled round the upper part ; aperture 

 small, ovale, slightly produced at the base. 



Hab. Sooloo Islands. 



A rather narrow turriculated shell, of solid growth, and 

 dark-chestnut colour, encircled throughout beneath the 

 suture with a broad, neatly excavated channel. It re- 

 sembles in some respects the figure of M. Tourannensis, a 

 species unknown to me, described by M. Souleyet in the 

 Zool. Voy. de la Bonite, but it is more slender, and has 

 not the produced extension of the lip, ot which he gives 

 an enlarged outline. 



November, 1859. 



